CFrame:Lerp breaking CFrame's position

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#1

Hello devs! So I am working on my Third Person Camera, and this is the code :

rs.RenderStepped:Connect(function()
	if char then
		local rootPart = char:FindFirstChild("HumanoidRootPart")
		local head = char:FindFirstChild("Head")
		if rootPart then
			local startCF = CFrame.new((rootPart.CFrame.Position + Vector3.new(0,2,0))) * CFrame.Angles(0,math.rad(xAngle),0) * CFrame.Angles(math.rad(yAngle),0,0)
			local cameraCFrame = startCF + startCF:VectorToWorldSpace(Vector3.new(cameraPos.X,cameraPos.Y,cameraPos.Z))
			local cameraFocus = startCF + startCF:VectorToWorldSpace(Vector3.new(cameraPos.X,cameraPos.Y,-50000))
			workspace.CurrentCamera.CFrame = workspace.CurrentCamera.CFrame:Lerp(CFrame.lookAt(cameraCFrame.Position,cameraFocus.Position),0.3)
			uis.MouseBehavior = Enum.MouseBehavior.LockCenter
		end
	end
end)

And this happens :

RobloxScreenShot20211203_185813224
RobloxScreenShot20211203_1858132241164×603 81.3 KB

But as long as I remove :Lerp()

rs.RenderStepped:Connect(function()
	if char then
		local rootPart = char:FindFirstChild("HumanoidRootPart")
		local head = char:FindFirstChild("Head")
		if rootPart then
			local startCF = CFrame.new((rootPart.CFrame.Position + Vector3.new(0,2,0))) * CFrame.Angles(0,math.rad(xAngle),0) * CFrame.Angles(math.rad(yAngle),0,0)
			local cameraCFrame = startCF + startCF:VectorToWorldSpace(Vector3.new(cameraPos.X,cameraPos.Y,cameraPos.Z))
			local cameraFocus = startCF + startCF:VectorToWorldSpace(Vector3.new(cameraPos.X,cameraPos.Y,-50000))
			workspace.CurrentCamera.CFrame = CFrame.lookAt(cameraCFrame.Position,cameraFocus.Position)
			uis.MouseBehavior = Enum.MouseBehavior.LockCenter
		end
	end
end)

It works as indeeded :

RobloxScreenShot20211203_185155105
RobloxScreenShot20211203_1851551051164×603 124 KB

So what’s the problem? Why does this happen?